CN108033791A - 一种高温还原气氛下微波用材料的制备方法 - Google Patents

一种高温还原气氛下微波用材料的制备方法 Download PDF

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CN108033791A
CN108033791A CN201711448158.5A CN201711448158A CN108033791A CN 108033791 A CN108033791 A CN 108033791A CN 201711448158 A CN201711448158 A CN 201711448158A CN 108033791 A CN108033791 A CN 108033791A
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郑红升
郑宏伟
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Abstract

本发明涉及一种高温还原气氛下微波用材料的制备方法，它包括材料成分和制备方法，所述材料成分为碳化硅、硅微粉、铬，所述材料成分中加入结合剂得出混合物，所述混合物搅拌均匀后压制成型，所述压制成型的混合物为坯体，所述坯体在110℃的温度下干燥10h‑48h，所述制备方法为在干燥氮气的环境下，将上述干燥后的坯体在温度300℃‑1460℃的范围内缓慢升温，升温时间为20h‑100h，温度升至1460℃时，保持1460℃下保温5h‑10h；本发明具有使用方便、制作过程简单、节约能源的优点。

Description

一种高温还原气氛下微波用材料的制备方法
技术领域
本发明属于高温微波材料的制作技术领域，具体涉及一种高温还原气氛下微波用材料的制备方法。
背景技术
微波加热区别去传统加热方式，传统加热方式为传导对流辐射，而微波则是通过分子间的运动来加热的，传统加热是从外到内的加热，而微波加热则是全面佳儿，没有内外之分，而还原气氛则是更好的为提纯金属为必备的一种气氛；本发明针对微波高温加热的问题，开发出了一种利用率高、安全性好、工业应用的一种高温还原气氛下微波用材料的制备方法。
发明内容
本发明的目的是为了克服现有技术的不足，而提供一种利用率高、安全性好、工业应用的一种高温还原气氛下微波用材料的制备方法。
本发明的目的是这样实现的：一种高温还原气氛下微波用材料的制备方法，它包括材料成分和制备方法，所述材料成分为碳化硅、硅微粉、铬，所述材料成分中加入结合剂得出混合物，所述混合物搅拌均匀后压制成型，所述压制成型的混合物为坯体，所述坯体在110℃的温度下干燥10h-48h，所述制备方法为在干燥氮气的环境下，将上述干燥后的坯体在温度300℃-1460℃的范围内缓慢升温，升温时间为20h-100h，温度升至1460℃时，保持1460℃下保温5h-10h，然后继续升温，在1700℃-1750℃的温度下保温20min-120min，保温时间过了之后，仍然在氮气的环境下降温度缓慢降至室温，所得的坯体即是成品。
所述材料成分的含量为碳化硅55%-75%、硅微粉25%-35%、铬2%-4%。
所述结合剂为糊精、聚乙烯醇、酚醛树脂中的一种或几种均可。
所述压制成型所需的压强为100Mpa-300MPa。
所述硅微粉可以用塞隆代替。
所述铬能用碳化钨、碳化铪、碳化钽代替。
所述铬能用氮化钨、氮化铪、氮化钽代替。
所述铬能用钨基合金、铪基合金、钽基合金代替。
本发明的有益效果：本发明是在还原气氛的环境下来完成高温微波材料的制备，本发明选择的还原气体是氮气，也即是在氮气环境下；因此，本发明具有利用率高、安全性好、工业应用的优点。
具体实施方式
实施例1
一种高温还原气氛下微波用材料的制备方法，它包括材料成分和制备方法，所述材料成分为碳化硅、硅微粉、铬，所述材料成分中加入结合剂得出混合物，所述混合物搅拌均匀后压制成型，所述压制成型的混合物为坯体，所述坯体在110℃的温度下干燥10h-48h，所述制备方法为在干燥氮气的环境下，将上述干燥后的坯体在温度300℃-1460℃的范围内缓慢升温，升温时间为20h-100h，温度升至1460℃时，保持1460℃下保温5h-10h，然后继续升温，在1700℃-1750℃的温度下保温20min-120min，保温时间过了之后，仍然在氮气的环境下降温度缓慢降至室温，所得的坯体即是成品。
本发明是在还原气氛的环境下来完成高温微波材料的制备，其中氮气能提供更好的制备环境，本发明选择的是在氮气环境下；具体的成分含量和可替代性为材料成分的含量为碳化硅55%-75%、硅微粉25%-35%、铬2%-4%，结合剂为糊精、聚乙烯醇、酚醛树脂中的一种或几种均可，压制成型所需的压强为100Mpa-300MPa，硅微粉可以用塞隆代替，铬能用碳化钨、碳化铪、碳化钽代替，铬能用氮化钨、氮化铪、氮化钽代替，铬能用钨基合金、铪基合金、钽基合金代替；因此，本发明具有利用率高、安全性好、工业应用的优点。
实施例2
所述材料成分的含量为碳化硅55%-75%、硅微粉25%-35%、铬2%-4%，所述结合剂为糊精、聚乙烯醇、酚醛树脂中的一种或几种均可，所述压制成型所需的压强为100Mpa-300MPa，所述硅微粉可以用塞隆代替，所述铬能用碳化钨、碳化铪、碳化钽代替，所述铬能用氮化钨、氮化铪、氮化钽代替，所述铬能用钨基合金、铪基合金、钽基合金代替，所述铬能用钨基合金、铪基合金、钽基合金代替。
具体实施方式是对本发明的进一步说明而非限制，对本领域普通技术人员来说在不脱离本发明实质内容的情况下对结构做进一步变换，而所有这些变换都应属于本发明所附权利要求的保护范围。

Claims (8)

1.一种高温还原气氛下微波用材料的制备方法，它包括材料成分和制备方法，其特征在于：所述材料成分为碳化硅、硅微粉、铬，所述材料成分中加入结合剂得出混合物，所述混合物搅拌均匀后压制成型，所述压制成型的混合物为坯体，所述坯体在110℃的温度下干燥10h-48h，所述制备方法为在干燥氮气的环境下，将上述干燥后的坯体在温度300℃-1460℃的范围内缓慢升温，升温时间为20h-100h，温度升至1460℃时，保持1460℃下保温5h-10h，然后继续升温，在1700℃-1750℃的温度下保温20min-120min，保温时间过了之后，仍然在氮气的环境下降温度缓慢降至室温，所得的坯体即是成品。
2.根据权利要求1所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述材料成分的含量为碳化硅55%-75%、硅微粉25%-35%、铬2%-4%。
3.根据权利要求1所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述结合剂为糊精、聚乙烯醇、酚醛树脂中的一种或几种均可。
4.根据权利要求1所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述压制成型所需的压强为100Mpa-300MPa。
5.根据权利要求1和3所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述硅微粉可以用塞隆代替。
6.根据权利要求1所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述铬能用碳化钨、碳化铪、碳化钽代替。
7.根据权利要求1所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述铬能用氮化钨、氮化铪、氮化钽代替。
8.根据权利要求1所述的一种高温还原气氛下微波用材料的制备方法，其特征在于：所述铬能用钨基合金、铪基合金、钽基合金代替。
CN201711448158.5A 2017-12-27 2017-12-27 一种高温还原气氛下微波用材料的制备方法 Pending CN108033791A (zh)

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CN103073332A (zh) * 2013-02-05 2013-05-01 中国科学院上海硅酸盐研究所 具有纳米孔结构的过渡金属碳化物陶瓷及其制备方法
CN104987097A (zh) * 2015-07-30 2015-10-21 武汉科技大学 一种氮化硅结合碳化硅耐火材料及其制备方法

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CN1793038A (zh) * 2005-11-18 2006-06-28 清华大学 利用微波技术烧结Sialon结合碳化硅耐火材料的方法
CN103073332A (zh) * 2013-02-05 2013-05-01 中国科学院上海硅酸盐研究所 具有纳米孔结构的过渡金属碳化物陶瓷及其制备方法
CN104987097A (zh) * 2015-07-30 2015-10-21 武汉科技大学 一种氮化硅结合碳化硅耐火材料及其制备方法

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